Change-speed gearing.



P. HOLLENBECK.y

CHANGE SPEED (BEARING.

APPLICANON FILED AUG.5. )914.

A TTOHNEYS PETER HOLLENBEGK, OE KILDCABJE,` OKLAHOMA.

CHA1\1'GE-SPEEID GEARING.

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Specification-of Letters yPatent.

Application filed August 5, 1914. Serial No. 855,120. L

This invention relates to transmission mechanism for various types ofmachinery, and has particular reference, to gearing adapted especiallyfor automobiles or other road vehicles.

More definitely stated, one of the chief objectsiof this invention is toprovide a gear mechanism adapted for substantially a direct drivebetween the motor shaftv and the driven axle'at various speeds.

A further object of the invention is to provide a change speedmechanism, the gearing of which includes a,master gear having gearWheels or members of different diameters secured thereto and adapted tocooper# ate selectively with a driving pinion accord ing to the speeddesired, means being provided to shift both the master gear and thepinion whenV making the change from one speed to another.

,The foregoing and other objects of the iuventionV will hereinafter bemore fully described and'claimed and illustrated in the drawings forminga part of'this specification in which like characters of refereinzeindicate corresponding parts in all. the views, and in Which- Y Figure lis a plan View indicating some- What ldiagrammatically the preferredeinbodiment of the invention; Fig. 2 is a vertical transverse. section-onthe line 2*-2 of Fig.'1; Fig. 3 is a vertical longitudinal section onthe line 3 3; Fig. 4 is a similar view -on t e` line 4-4- and Fig. 5 isa transverse sectonal detail `on the line 5 5.

The several parts of the device may be made of any suitable materials,and the relative sizes and proportions, as well as the -general designof the mechanism, may be varied to a considerable extent withoutdeparting from the spirit of the invention hereinafter more fully setforth and ssecih cally claimed. f

. work.

Referring more particularly to' the drawings I show a' shaft 10 Whichmay be treated as the driving or motor 'shaft journaled in stationarybearings 11 and 12 arranged on any suitable supporting means or frame-'lhis motor shaft is shown as arranged at right angles to the drivenshaft or axle 13 suggestedI in the drawings as constituting a'iear axleof an automobile. twill be understood, however, that this is merelysuggestive and it is not to be understood as limiting the scope of theinvention unnecessarily; for instance, for lsome purposes either of theshafts j ust described may be regarded ais `tlie driving shaft andtheother the driven s ia'ft.

At 14 I show a driving pinion splined to and slidable along the motorshaft l() between the ixed bearings 11 and 12. This pinion may be of anydesired type and isv shown adapted to coperate selectively with aplurality of gear rings or members 15 and 16 constituting concentricportions of a com pound master gear 17. While I l'show but twoof thesegear members, it is obvious that any other suitable number may beprovided without departing from the principle of the invention. Themaster gear '17 includes also a spur gear member 18 arranged in a plane16. rihis mastergear is rigidly secured in rat-enten .nay ii; ier-s.

so Vparallel to the planes. of the members 15 and y any suitable mannertoa jack s'haft'l) paralp `lel to the driven axle and journaled in asocket 20 of the fixed bearing 11 at one end.

and in a fixed bearing 21 adjacent its other end. The axis of the jackshaft lies in the 'and substantially at right angles thereto.

The driving pinion 1li with its sleeve 14 same plane as the axis 'of themotor *shaftA is adapted to be reciprocated vor adjusted along the motorshaft so. as to bring' the pinion into mesh with either of the'gearmembers 15 or 16. `As a suitable means for accomplishing this result Iprovide aguide 22 parallel to the motor shaft and movable along thisguide is a yoke l'engaged in'a circumferential groove 24 inone end ofthe 25 is connected to the yoke sleeve 14. A rod v l 23 and extends in aVgeneral direction.- parallei to the motor shaft through a iixed bean'26, and has connected to its front lend a bail 27.l The bail for thispurpose is provided with an eye 28 journaled around the Y end of the rod25 and maintained in position -by means of collars or shoulders 29.

The bail' 27 constitutes one arm of a lever of the first class connectedto a shaft so as to slide upon the shaft but be non-rotary thereon bymeans of` a feather' or spline 31. The other arm of the levercpnstitutes a handle 32 whereby the lever may be rocked around A theaxis of the shaft 30 and move longitudinally therealong forY the purposeof shifting the rod 25 and pinion 14 with respect to the axis of themaster gear. The handle 32 cooperates with a casing 33 having aplurality of slots or keepers 34 corresponding to the differentdiameters of the gear members 15 and 16. 'lpjhere is also provided acommunieating longitudinal slot 35 along which the this purposecomprises a link 36 pivotally of the master connected at 37 to a knuckle38 journaled in fixed bearings 39 on an axis parallel to the motorshaft. The shaft 40 to which the knuckle is connected is provided with auniversal joint 41 through which the rod 42 leads to the levershaft 30and to which it isconnected by another universal ioint 43. When theshaft 30 is rotated, as when moving the handle into or out of one of theslots 34, the shaft 42 is given a correspondingA rotation with theresult thatthe knuckle 38 will be swung through an arc of a circlepartially around the axisof the shaft 40 and hence causing the jackshaft and master gear secured thereto to be drawn outwardly with respecttothe motor'shaft along the slot 20 ofthe fixed bearing 11. The link 36is pivotally connected to acollar 44 having rotary', but non-slidable,connection vwith the 1 jack shaft.

Vvrith theforegoing description of the mechanism, the operation of thedevice may 'be summarized as follows: JV ith the pinion 14 meshing withthe slow speed member'lG gear and adapted, therefore, for operating thedriving axle of themachine through any suitable gear connections as forinstance the gear 45 meshing with the spur gear 18, to change to a highspeed the operator grasps`the handle 32 and throws it out of the groove34 in which it is shown located in Fig. 1, thus rotating the shaft 30,rod 42 and shaft 40. This rotation of these members causes the link 36to drawI the master gear out of mesh with the pinion 14, the spur gear18 being wide enough. to maid tain itsengagement with the large gear Theoperator then slides the lever 32 along the slot 35 until it comesopposite the slot and this sliding movement causes the bail 27 to drawthe rod 25 and pinion 14 toward the axis of the jack shaft or intoposition to be in mesh with the high speed member 15 when the handle isturned into normal lecking position in the latter mentioned slot Thislast movement of the handle 32 causes the link 36 to restore the mastergear into normal position to be driven by the pinion. From theconstruction disclosed herein will be obvious that While the handle inthe longitudinal slot 35 the pinion and master gear are out ofengagement, allow ing the driven shaft or axle to become idlenotwithstanding the fact that the driving shaft and pinion may remain inmotion.

Having thus described my inventio: claim as new'and desire to secure byters Patent 1. In change speed gearing, the combinay tion of a powershaft, a pinion splined there on, a jack shaft arranged at an angle tothe power shaft, a master gear including a plurality of gear memberscooperating lectively with the pinion,

and means to cause the master gear to move away from the pinion, thenshift the pinion, and then return the master gear into mesh with* thepinion, said last mentioned means including a rod loosely'connected tothe pinion and vslidable substantially parallel with the power shaft, ahand lever having a bail pivotally connected to said lrod and movablearound the axis theredf, and a jointed shaft connected at one end to themaster gear and having its other end arranged co-axially with said rodand adapted to be rotated by said lever.

2. In change speed gearing,vthe combination of a power shaft, a pinionslidable and splined thereon, a master gear including a plurality ofgear members coperating 'sclectivelyl with said pinion', and manuallycontrolled means for throwing the master gear out of mesh With saidpinion, sliding the pinion and returning the master gear with one of itsgears into mesh with the pinion by a continuous operation, said manuallycontrolled means including a jointed shaft, a casing adjacent the motorshaft and in which one end of the jointed shaft is 'journaled, linkconnections between the other end of the jointed shaft and the mastergear, a lever of the first class splined and slidable upon thatI portionof the jointed shaft Within the casing, a rod connected atv -one endtothe pinion and having its other lilo Aend arranged coaxially with thatpart of the name to this specification in the presence of jointed shaftjournaled in the easing but two subscribing Witnesses.

spaced 'ther from, and Aa bail loosely journaled upon the adjacent endof the rod and vconstihating apart or extension of said hand lever,substantially as set. forth.

In testimony Whereoc I have signed my PETER HOLLENBECK.

